Trolley-wheel.



No. 714,589. Patented Nav. 25, |902. .1. s. LocKEnBY. A,

TROLLEY WHEEL.

(Application med Jan. 27, 1902.)

(No Modal.)

JEROME B. LOOKERBY, OF ITHACA, NEW YORK.

TROLLEY-WH EEL.

SPECIFICATION forming part of Letters Patent No. 714,589, dated November 25, 1902.

Application iiled January 27, 1902. Serial No. 91,407. (No model.)

To J2/ZZ whom t may concern:

Be it known that I, JEROME B. LocKERBY, a citizen of the United States, residing at Ithaca, in the county of Tompkins and State of New York,lhave invented a new and useful Trolley-Wheel, of which the following is a specication. n

My invention is an improvement in trolleywheel supports, and relates to the trolleywheel of the overhead system.

The object of my invention is to provide a support for the wheel in which the latter may be allowed a lateral movement, so as to positively engage the wire at all times.

Another object of my invention is to provide the wheel-supporting frame with outwardly-flaring spring-actuated arms, so that the wheel may beeasily guided to engage the wire and to so arrange the arms that no injury or inconvenience will be experienced from cross-wires; and with these objects in view my invention also consists in certain details of construction and novelties of. combination, as will be fully described in the following speciiicaton and pointed out in the claims, reference being had` to the drawings, in which- Figure l is aperspective view of a portion of a trolley-polehaving myimprovement applied. Fig. 2 is a side view of my improvement. Fig. 3 is a sectional view on about the line 3 3, Fig. 2. Fig.4 is a detail front view illustrating the manner of locking the wheelsupporting frame in position, and Fig. 5 is a detail section on the line 5 5 of Fig. 4.

In carrying out my invention I provide the end of the trolley-poleA with a bracket-arm B, that is formed with a downwardly-projecting member' B', whose outer surface is concaved and whose lower end terminates in a tapered socket B2, in which is adapted to fit and operate a conical-shaped stem O' of a trolley-wheel-supporting frame O,which consists of the said stem and the side plates C2 C2, as clearlyshown. The plates are provided with apertures,` through which project the ends of a shaft D, upon which is mounted the trolley-wheel E. Upon the outer ends of the shaft is also mountedguide-arms F, that are held in position upon the plate by brackets G, carried by the plate, and in order to positively hold the arms in a vertical position I arrange springs I-I upon the plate,whose free ends rest against the said arms and normally hold them in an upright position. These arms have their outer ends terminate in outn wardly and rearwardly projecting portions F', that form a guide by which the wheel is easily returned against the wire, and by providing a limited movement for the arms they are permitted to swing back when the trolleywheel passes a cross-wire, and thus slip over the wire with but a very slight jar.

As before stated, the wheel supporting frame rests in a socket in the bracket, so that the plate and wheel may be allowed to turn -to accommodate the angles of the trolleywire-such as on curves, &c.-and in order that the movement of the wheel may be lim ited I provide the stem O' with a pin H', that operates in a slot H2, arranged in the hub of the bracket B, and limits the movement of the wheel, but allows enough so that the wheel may rest, squarely against the wire at all times. This movement also decreases the danger of the wheel slipping the wire on curves, which is a very common complaint in the wheels now generally used.

It will thus be seen that I employ an exceedingly simple construction by which the life of the wheel is prolonged, the wheel prevented from jumping or slipping the wire, and in which much valuable time will be saved through the avoidance of stopping the car to replace the wire, as is now done.

Having thus fully described my invention, what I claimfas new, and desire to secure by Letters Patent of the United States, is-

l. The combination of a trolley-pole having a bracket mounted upon the end thereof, a frame carried by the bracket, an axle journaled in the frame and having a trolley-wheel mounted thereon, guide-arms mounted upon the ends of the axle and having their free ends terminating in outwardly and rearwardlyA extending portions, guide-brackets arranged upon the frame and throughwhich the arms pass for limiting the movement of said arms, and aspring mounteduponthe frame and adapted to engage the saidarms, substantially as shown and described.

2. The combination of a trolley-pole having 4a bracket mounted thereon, a downwardlyextending arm formed upon the bracket, a

frame carried bythe said arm and movable laterally thereon, means for limiting the movement thereof, a shaft carrying a trolley- Wheel, spring-actuated guide-arms held upon the shaft and having their ends terminating in rearwardly and outwardly flaring portions, substantially as shown and described.

v 3. The combination of a trolleypole having a bracket mounted thereon, a downwardly-A extending arm formed integral with the bracket and having its outer face concaved and its lower end terminating in a socket portion, a'frame having a stern arranged to fit the said socket, the sides of the said frame being circular in shape, and a shaft carried by the frame and having a trolley-Wheel mounted thereon, the said plates being of a greater diameter than the Wheel.

ranged upon the frame for limiting the movement of said arms, substantially as and for the purpose set forth.

JEROME B. LooKERBY.

Witnesses:

LE GRAND T. GoUcH, CHARLES H. CoUoH. 

